133 	struct line *line = container_of(work, struct line, task.work);  in line_timer_cb()  local
135 	if (!line->throttled)  in line_timer_cb()
136 		chan_interrupt(line, line->read_irq);  in line_timer_cb()
139 int enable_chan(struct line *line)  in enable_chan()  argument
145 	INIT_DELAYED_WORK(&line->task, line_timer_cb);  in enable_chan()
147 	list_for_each(ele, &line->chan_list) {  in enable_chan()
159 		err = line_setup_irq(chan->fd, chan->input, chan->output, line,  in enable_chan()
170 	close_chan(line);  in enable_chan()
198 			um_free_irq(chan->line->read_irq, chan);  in free_irqs()
200 			um_free_irq(chan->line->write_irq, chan);  in free_irqs()
218 			um_free_irq(chan->line->read_irq, chan);  in close_one_chan()
220 			um_free_irq(chan->line->write_irq, chan);  in close_one_chan()
230 void close_chan(struct line *line)  in close_chan()  argument
239 	list_for_each_entry_reverse(chan, &line->chan_list, list) {  in close_chan()
278 int console_open_chan(struct line *line, struct console *co)  in console_open_chan()  argument
282 	err = open_chan(&line->chan_list);  in console_open_chan()
291 int chan_window_size(struct line *line, unsigned short *rows_out,  in chan_window_size()  argument
296 	chan = line->chan_in;  in chan_window_size()
303 	chan = line->chan_out;  in chan_window_size()
384 int chan_config_string(struct line *line, char *str, int size,  in chan_config_string()  argument
387 	struct chan *in = line->chan_in, *out = line->chan_out;  in chan_config_string()
438 static struct chan *parse_chan(struct line *line, char *str, int device,  in parse_chan()  argument
476 				 .line		= line,  in parse_chan()
488 int parse_chan_pair(char *str, struct line *line, int device,  in parse_chan_pair()  argument
491 	struct list_head *chans = &line->chan_list;  in parse_chan_pair()
496 		line->chan_in = line->chan_out = NULL;  in parse_chan_pair()
509 		new = parse_chan(line, in, device, opts, error_out);  in parse_chan_pair()
515 		line->chan_in = new;  in parse_chan_pair()
517 		new = parse_chan(line, out, device, opts, error_out);  in parse_chan_pair()
523 		line->chan_out = new;  in parse_chan_pair()
526 		new = parse_chan(line, str, device, opts, error_out);  in parse_chan_pair()
533 		line->chan_in = line->chan_out = new;  in parse_chan_pair()
538 void chan_interrupt(struct line *line, int irq)  in chan_interrupt()  argument
540 	struct tty_port *port = &line->port;  in chan_interrupt()
541 	struct chan *chan = line->chan_in;  in chan_interrupt()
550 			schedule_delayed_work(&line->task, 1);  in chan_interrupt()
560 			tty_port_tty_hangup(&line->port, false);  in chan_interrupt()
561 			if (line->chan_out != chan)  in chan_interrupt()
562 				close_one_chan(line->chan_out, 1);  in chan_interrupt()